Home / 493,257.87-739,828.89-138,300.48

Finding the Fourth Proportional to 493,257.87, 739,828.89 and 138,300.48

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Solution

The fourth proportional to 493,257.87, 739,828.89 and 138,300.48 is: 207,434.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,257.87 : 739,828.89 = 138,300.48 : x
  2. Step 2: Convert to fraction form
    493,257.87/739,828.89 = 138,300.48/x
  3. Step 3: Cross multiply
    493,257.87x = 739,828.89 × 138,300.48
  4. Step 4: Simplify right side
    493,257.87x = 102,318,690,604.87
  5. Step 5: Solve for x
    x = 102,318,690,604.87/493,257.87
  6. Step 6: Final answer
    x = 207,434.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.